Biogas power generation waste heat utilization system for kitchen waste-household waste treatment plant

The utility model belongs to the technical field of biogas power generation waste heat utilization, and particularly relates to a biogas power generation waste heat utilization system for a kitchen waste-household garbage treatment plant. According to the technical scheme, the marsh gas power generation waste heat utilization system for the kitchen waste-household waste treatment plant comprises a marsh gas purification unit, a double-membrane marsh gas storage cabinet, a booster fan and a marsh gas generator set which are sequentially connected, and a smoke pipeline of the marsh gas generator set is connected with a first smoke heat exchanger and a second smoke heat exchanger. A primary air flue gas pipeline of the first flue gas heat exchanger is connected with a primary air flue gas-air preheater, and a kitchen slurry pipeline of the second flue gas heat exchanger is connected with a kitchen slurry heating tank; a cylinder sleeve water pipeline of the biogas generator set is connected with a cylinder sleev